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Year : 2019  |  Volume : 15  |  Issue : 5  |  Page : 989-993

Expression of androgen receptor in primary breast carcinoma and its relation with clinicopathologic features, estrogen, progesterone, and her-2 receptor status

Department of Pathology, St. John's Medical College, Bengaluru, Karnataka, India

Correspondence Address:
Gnanapriya Vellaisamy
Department of Pathology, St. John's Medical College, Sarjapur Road, Bengaluru - 560 034, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcrt.JCRT_572_17

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Introduction: The role of estrogen/progesterone receptors (ER/PR) is well-established with respect to therapy and prognosis of breast carcinoma. However, the role of androgen receptor (AR) expression is unclear in the Indian context. The objective is to study the following: (a) Expression of AR in resection specimens of ductal carcinomas, (b) Relationship of AR with clinicopathologic features, ER, PR, and Her-2 status. Materials and Methods: This study included female patients with infiltrating ductal carcinoma with a minimum of 10 axillary lymph nodes, whose hormone receptor status data were available. Demographic and histopathologic details were retrieved. Immunohistochemistry for AR was done and considered positive if ≥10% of tumor cells showed nuclear staining and compared to various clinicopathologic features. Results: A total of 71 cases were included in the study. AR expression was noted in 52% of cases. Of the 35 ER and/or PR expressing tumors, AR was positive in 24 cases. In contrast, of the 36 ER/PR-negative tumors, AR was expressed in only 13 cases (P = 0.006). There was no significant difference in the expression of AR between Her-2 positive and negative cases. AR positivity was noted in 23% of triple-negative tumors. Age did not show an influence on AR status. Among histopathologic parameters, low-grade tumors were significantly associated with AR expression (P = 0.018) while tumor size, lymphovascular emboli, and nodal status were not. Within the follow-up period, four patients from AR-positive group developed distant metastasis. Conclusion: Indian patients with breast carcinoma have a higher AR expression in low-grade and ER/PR-positive tumors, in concordance with Western studies. A good number of triple-negative tumors also express AR, which needs further evaluation.

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